AT Content Calculator

AT Content Calculator: Calculate DNA/RNA AT Content

Calculate the AT content of a DNA or RNA sequence. Select the sequence type (DNA or RNA), input your sequence (using A, T, C, G for DNA; A, U, C, G for RNA) using the keypad or keyboard, then click Calculate to get the AT content percentage.

How It Works

Select the sequence type (DNA or RNA) using the dropdown, enter your sequence using the keypad or keyboard, then click “Calculate” to see the AT content. The calculator displays the total sequence length, AT count, and AT percentage. Use the “Share” button to copy the calculator’s URL or the “Embed” button to copy an iframe code for embedding on another website.

AT Content Calculator

Sequence Type
Nucleotide Sequence

Result

Total Sequence Length:

AT Count:

AT Content (%):

Steps

About AT Content Calculator

The AT Content Calculator computes the percentage of adenine (A) and thymine (T) nucleotides in a DNA sequence, or adenine (A) and uracil (U) in an RNA sequence. It’s a useful tool for molecular biology research, as AT content can influence DNA stability and gene expression.

How to Use

  • Select the sequence type (DNA or RNA) from the dropdown.
  • Enter your sequence using the keypad buttons (A, T/U, C, G) or keyboard (case-insensitive).
  • Click the “Calculate” button to compute the AT content. The page will scroll to the result.
  • Click the “Clear” button to reset the sequence input and results.
  • Click the “Share” button to copy the calculator’s URL to your clipboard for sharing.
  • Click the “Embed” button to copy an iframe code for embedding the calculator on another website.
  • The total sequence length, AT count, and AT percentage will be displayed, along with detailed step-by-step calculations below.

Formulas

AT Count:

AT Count = Number of A and T (or U for RNA) nucleotides in the sequence

AT Content Percentage:

AT Content (%) = (AT Count / Total Sequence Length) × 100

Important Notes

  • The sequence must contain only valid nucleotides for the selected type: A, T, C, G for DNA; A, U, C, G for RNA (case-insensitive). Invalid characters or empty sequences will trigger an error.
  • The “Share” and “Embed” buttons require a browser that supports the Clipboard API.